211050197604 has 81 divisors (see below), whose sum is σ = 557859189433. Its totient is φ = 67271153664.

The previous prime is 211050197597. The next prime is 211050197623. The reversal of 211050197604 is 406791050112.

The square root of 211050197604 is 459402.

It is a perfect power (a square), and thus also a powerful number.

211050197604 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 501 + 97 + 60 + 4 = 666.

211050197604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 82312757604 + 128737440000 = 286902^2 + 358800^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 63395812 + ... + 63399140.

Almost surely, 2^211050197604 is an apocalyptic number.

211050197604 is the 459402-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211050197604

211050197604 is an abundant number, since it is smaller than the sum of its proper divisors (346808991829).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211050197604 is an equidigital number, since it uses as much as digits as its factorization.

211050197604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6714 (or 3357 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

Multiplying 211050197604 by its sum of digits (36), we get a square (7597807113744 = 2756412²).

211050197604 divided by its sum of digits (36) gives a square (5862505489 = 76567²).

The spelling of 211050197604 in words is "two hundred eleven billion, fifty million, one hundred ninety-seven thousand, six hundred four".